      <h5>Previous generation Wiring boards</h5>
      <p>There are two previous generations of Wiring boards: The Wiring/WiringMini V1.0 based on the atmega128 microcontroller and the Wiring V1.1 Sparkfun board based on the atmega1281/atmega2561 microcontrollers. With 53 I/O pins, 8 analog inputs, 2 hardware serial ports, 6 PWM (analog outputs), SPI, TWI, 8 external interrupts pins, power regulation with output for 5V (and 3.3V in Wiring V1.1 Sparkfun). See the <a href="compare.html">comparison</a>. </p>
      <p><img src="imgs/PinsWiringV1.1Sparkfun.png" width="590" height="496" /></p>
      <p>Wiring V1.1 Sparkfun pin layout</p>
      <p>&nbsp;</p>
      <p><img src="imgs/PinsWiringV1.0.png" width="546" height="512" /></p>
      <p>Wiring V1.0 Rev 0004 pin layout (The WiringMini has the same pin layout)</p>

